“Secret donors come back to boost former-Koch group”

A secretive political group that is little more than a mailbox full of money in a Des Moines UPS Store raised more than $29.4 million in 2016, most of which was funneled into ads aimed at electing Republicans.

Tax documents obtained by the Center for Responsive Politics show that American Future Fund (AFF), a 501(c)(4) social welfare organization that doesn’t have to disclose its donors, had a banner year in 2016.

Bringing in such a considerable sum is no small feat for an organization that boasts no employees nor any measurable social welfare beyond its robust political spending. But in the world of secretive political groups, it’s not an anomaly.